US7723246B2 - Laminate material web and method for the production of a laminate material web - Google Patents

Laminate material web and method for the production of a laminate material web Download PDF

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Publication number
US7723246B2
US7723246B2 US11/981,995 US98199507A US7723246B2 US 7723246 B2 US7723246 B2 US 7723246B2 US 98199507 A US98199507 A US 98199507A US 7723246 B2 US7723246 B2 US 7723246B2
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US
United States
Prior art keywords
nonwoven fabric
fabric webs
film
laminate material
film strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US11/981,995
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English (en)
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US20080108267A1 (en
Inventor
Georg Baldauf
Marcus Schönbeck
Christoph Willing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordenia Technologies GmbH
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Nordenia Technologies GmbH
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Assigned to NORDENIA TECHNOLOGIES GMBH reassignment NORDENIA TECHNOLOGIES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BALDAUF, GEORG, SCHONBECK, MARCUS, WILLING, CHRISTOPH
Publication of US20080108267A1 publication Critical patent/US20080108267A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15585Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A61F13/15593Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15756Applying tabs, strips, tapes, loops; Knotting the ends of pads
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56Supporting or fastening means
    • A61F13/5622Supporting or fastening means specially adapted for diapers or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56Supporting or fastening means
    • A61F13/58Adhesive tab fastener elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56Supporting or fastening means
    • A61F13/62Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop
    • A61F13/622Fabric strip fastener elements, e.g. hook and loop
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062Prior to assembly
    • Y10T156/1075Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y10T156/1077Applying plural cut laminae to single face of additional lamina
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659Including an additional nonwoven fabric
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674Nonwoven fabric with a preformed polymeric film or sheet

Definitions

  • the present invention relates to a laminate material web having two webs of nonwoven fabric that lie on the outside, and film strips of an elastic film disposed between them, in sections.
  • the nonwoven fabric webs are connected with one another in the regions between the film strips.
  • the laminate material web can be used, for example, for the production of elastic closure strips for baby diapers or adult diapers, which closure strips can also have the shape of diaper ears, and possess an elastic center region as well as less elastic end sections that follow the former on both sides.
  • the non-elastic or less elastic end regions are utilized in order to attach closure elements, e.g. hook tapes, and to affix the closure strip on the diaper chassis.
  • closure elements e.g. hook tapes
  • a large number of elastic film strips is laminated in between two broad webs of nonwoven fabric, at a distance from one another. The closure strips needed for diaper production are then cut from the resulting laminate material web.
  • a laminate material web having the characteristics described initially is known from the reference EP 1 686 209 A1.
  • the film strips have an elastic, tacky core, which is covered with a thin nonwoven layer on one or both sides, in order to allow processing of the film strips despite the tackiness of the core.
  • these webs are subjected to a ring rolling process. In this way, distortions form in the stretched and not elastically resilient nonwoven fabric webs, which are pulled smooth in a stretching process.
  • a simple possibility for the production of a laminate material web having the desired properties consists in connecting two nonwoven fabric strips with one another by means of an elastic film.
  • the asymmetrical structure of such a laminate tends to tear off in the region of the connection between film and nonwoven fabric web, which is generally produced by means of adhesive.
  • the elastic film is exposed in this case, and therefore the laminate material web does not possess the pleasant textile character of the remainder of the diaper surface in this region.
  • First-time stretching of the diaper closure element provided with the weakening is generally performed by the person putting the diaper on; in the case of adult diapers, this person would be the diaper wearer himself/herself, if applicable.
  • the laminate material webs have one weakening per film strip, in each instance, and the weakenings run symmetrical to the film strip, in each instance. It is practical if the weakenings extend over the entire length of the film strips.
  • the nonwoven fabric webs can be glued to one another in the regions between the film strips. It is practical if the edge regions of the film strips are also glued to the inner surfaces of the nonwoven fabric webs. In both cases, hot-melt glues can be used as adhesives; they produce the laminate by means of a lamination process.
  • the film strips can consist, in each instance, of an elastomer layer and at least one outer layer of nonwoven fabric applied to the elastomer layer. Because the elastomer layer is frequently tacky, it can be practical to provide it with outer layers of nonwoven fabric on both sides.
  • the nonwoven fabric outer layers can have a significantly lesser thickness than the nonwoven fabric webs, in order to fulfill their intended functions, in other words textile character on the one hand, and coverage of the tacky elastomer layer, on the other hand.
  • a method for the production of a laminate material web whereby film strips are produced from an elastic film by means of a cutting process, whereby the film strips are then disposed between nonwoven fabric webs, in sections, and whereby afterwards the nonwoven fabric webs are connected with one another in the region between the film strips.
  • the film strips are connected with the inner surfaces of the nonwoven fabric webs only at the two longitudinal edges, in each instance, both on the top and on the bottom, and the nonwoven fabric webs are weakened into the regions that cover the film strips, in the web direction. Practical embodiments of this method are described below.
  • FIG. 1 is a schematic cross-sectional representation of a diaper closure element produced from a laminate material web according to the invention
  • FIG. 2 is a top view X in FIG. 1 ;
  • FIG. 3 shows a method according to the invention for the production of a laminate material web.
  • FIG. 1 shows a laminate material web from which individual diaper closure elements 1 can be produced.
  • the laminate material web has two nonwoven fabric layers 2 that lie on the outside, and film strips 3 of an elastic film 4 that are disposed between them, in sections (see FIG. 3 ).
  • Nonwoven fabric webs 2 are connected with one another in the regions 5 between film strips 3 .
  • Film strips 3 are connected only with the inner surfaces of nonwoven fabric webs 2 at the two longitudinal edges 6 , in each instance, both on the top and on the bottom.
  • Nonwoven fabric webs 2 have weakenings 7 running in the web direction, in the regions that cover film strips 3 , which are configured as perforations in the exemplary embodiment.
  • nonwoven fabric webs 2 possess one perforation 7 per film strip 3 , in each instance, which in turn runs symmetrically to film strip 3 .
  • Perforations 7 extend over the entire length of film strips 3 .
  • nonwoven fabric webs 2 are glued to one another over their full area, while the edge regions of film strips 3 are glued to the inner surfaces of nonwoven fabric webs 2 over their full area.
  • the gluing can be performed using a hot-melt glue 8 , within the framework of a lamination process, for example.
  • film strips 3 consist, in each instance, of an elastomer layer 9 and at least one outer layer 10 of nonwoven fabric that is applied to elastomer layer 9 .
  • elastomer layer 9 is tacky and therefore provided with thin outer layers 10 of nonwoven fabric on both sides. It is practical if these outer layers 10 have a weight per area unit between 5 g/m 2 and 15 g/m 2 , whereas nonwoven fabric webs 2 have a clearly higher weight per area unit, in each instance.
  • FIG. 3 shows a method according to the invention, for the production of a laminate material web.
  • film strips 3 are produced from an elastic film 4 , by a cutting process; these strips are guided over deflection devices 11 and passed to a lamination device 12 as parallel strips, spaced apart from one another; in the lamination device, film strips 3 are disposed between nonwoven fabric webs 2 , in sections, and laminated in.
  • Nonwoven fabric webs 2 are connected with one another via a full-area adhesive application in the regions 5 between film strips 3 .
  • Film strips 3 are connected with the inner surfaces of nonwoven fabric webs 2 via a corresponding adhesive application on the inner surface of the two laminate material webs 2 , only at the two longitudinal edges 6 , both on the top and on the bottom.
  • nonwoven fabric webs 2 are perforated in the regions that cover film strips 3 , symmetrically to film strip 3 , in each instance, in the web direction.
  • nonwoven fabric webs 2 pass through a corresponding perforation device 13 .
  • the laminate material web that is produced can be processed further to produce elastic diaper closures 1 , which have only one film strip 3 , in each instance, using appropriate cutting processes.
  • Nonwoven fabric webs 2 that have been connected with one another form non-elastic regions in regions 5 between film strips 3 .
  • the sections that contain a film strip 3 in each instance, form an elastic region that can be exposed.
  • nonwoven fabric webs 2 and outer layers 10 of film strips 3 are made up of the same raw materials, for example polypropylene fibers.
  • outer layers 10 of film strips 3 can differ from nonwoven fabric webs 2 .
  • a dense fiber structure is selected for outer layers 10 of film strips 3 , which prevents the layers from sticking together when they have been wound up into a roll.
  • a comparatively thin outer layer thickness is sufficient to guarantee the desired textile surface.
  • nonwoven fabric webs 2 that are laminated onto the outside on the other hand, are clearly thicker than outer layers 10 .

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
US11/981,995 2006-11-02 2007-11-01 Laminate material web and method for the production of a laminate material web Expired - Fee Related US7723246B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20060022799 EP1918092B1 (de) 2006-11-02 2006-11-02 Verbundstoffbahn und Verfahren zur Herstellung einer Verbundstoffbahn
EP06022799 2006-11-02
EP06022799.8 2006-11-02

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US20080108267A1 US20080108267A1 (en) 2008-05-08
US7723246B2 true US7723246B2 (en) 2010-05-25

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US (1) US7723246B2 (ja)
EP (1) EP1918092B1 (ja)
JP (1) JP5235381B2 (ja)
ES (1) ES2402647T3 (ja)
PL (1) PL1918092T3 (ja)

Cited By (6)

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US9765459B2 (en) 2011-06-24 2017-09-19 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US9827755B2 (en) 2011-06-23 2017-11-28 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US9827696B2 (en) 2011-06-17 2017-11-28 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US10369769B2 (en) 2011-06-23 2019-08-06 Fiberweb, Inc. Vapor-permeable, substantially water-impermeable multilayer article
US10875285B2 (en) 2016-04-22 2020-12-29 Berry Plastics Corporation In-line lamination method and apparatus
US11090916B2 (en) 2015-07-27 2021-08-17 Dow Global Technologies Llc Elastic laminates, method of manufacture thereof and articles comprising the same

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EP2177654B1 (de) * 2008-10-20 2013-07-24 Mondi Consumer Packaging Technologies GmbH Verfahren zur Herstellung eines Vliesverbundmaterials sowie Vorrichtung zur Durchführung des Verfahrens
DE202008016226U1 (de) * 2008-12-06 2009-02-26 Nordenia Technologies Gmbh Verbundmaterial
US8981178B2 (en) * 2009-12-30 2015-03-17 Kimberly-Clark Worldwide, Inc. Apertured segmented films
US8895126B2 (en) 2010-12-31 2014-11-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US9676164B2 (en) 2011-07-18 2017-06-13 Kimberly-Clark Worldwide, Inc. Extensible sheet material with visual stretch indicator
PL2799606T3 (pl) * 2013-05-03 2020-06-01 Mondi Gronau Gmbh Laminat elastyczny

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9827696B2 (en) 2011-06-17 2017-11-28 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US10800073B2 (en) 2011-06-17 2020-10-13 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US11123965B2 (en) 2011-06-23 2021-09-21 Fiberweb Inc. Vapor-permeable, substantially water-impermeable multilayer article
US9827755B2 (en) 2011-06-23 2017-11-28 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US11383504B2 (en) 2011-06-23 2022-07-12 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US10369769B2 (en) 2011-06-23 2019-08-06 Fiberweb, Inc. Vapor-permeable, substantially water-impermeable multilayer article
US10850491B2 (en) 2011-06-23 2020-12-01 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US10253439B2 (en) 2011-06-24 2019-04-09 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
US10900157B2 (en) 2011-06-24 2021-01-26 Berry Global, Inc. Vapor-permeable, substantially water-impermeable multilayer article
US9765459B2 (en) 2011-06-24 2017-09-19 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
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US20080108267A1 (en) 2008-05-08
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PL1918092T3 (pl) 2013-07-31
EP1918092B1 (de) 2013-02-06

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